Comparison of prostatic volume and dimensions by transrectal and transurethral ultrasonography

Abstract

Objective To compare the volumes and dimensions of imetry were 22% greater than those from transrectal planimetry. Although there was a good correlation the prostate gland as measured by transrectal and transurethral ultrasonography (TRUS and TUUS) and (r=0.984) between transurethral planimetry and the volumes derived using the transurethral dimensions to study the prostatic changes that occur in the presence of an urethral instrument.with the prolate ellipsoid formula, the latter produced values 17% and 25% lower by the transurethral and Patients and methods Twenty men (mean age 71 years, range 43-85) with symptoms of prostatic enlargement transrectal routes, respectively. These volume estimates varied widely, indicating that the simple underwent TRUS and the dimensions and volumes of their prostates were obtained by the dimensional addition of a constant to the prolate ellipsoid formula would not correct the volume. Three-dimensional method and by step planimetry. Within 24 h, all the men were examined cystoscopically under sedoanalge-changes of the prostate occurred with TRUS and TUUS; with TUUS, the craniocaudal and anteropos-sia and underwent TUUS. Their prostatic volumes and dimensions were again measured by the dimensional terior diameters were significantly larger (by 7% and 18%, respectively) while the transverse diameter was method and by step planimetry.Step planimetry was carried out using a specially designed indexer firmly smaller by 20%. Conclusion The estimated volumes and dimensions of attached to the examination couch or operating table. All the static images and planimetry slices were video the prostate differed when measured by TRUS and TUUS and three-dimensional changes in the prostate recorded for later computer enhancement and to study the three-dimensional changes occurring in the pros-occurred in the presence of an urethral instrument. Keywords Volume estimate, prostate, reproducibility, tate. The volumes and dimensions obtained by TRUS and TUUS were compared. prostatic ultrasonography, computer-aided diagnostics, three-dimensional changes Results Volumes obtained by transurethral step planvolume by TRUS, step planimetry is reported to be the

Prostate Cryotherapy Monitoring Using Vibroacoustography: Preliminary Results of an Ex Vivo Study and Technical Feasibility

“…One may mitigate this problem by using a specific transurethral VA probe that allows imaging the frozen prostate from the urethral side. This probe would be a modified version of the transurethral ultrasonography (TUUS) probe that has been used in clinical practice [48]. Further development of a transurethral VA (TUVA) probe and advanced investigation on its efficiency and practical use are warranted.…”

Soft Tissue Resection for Prostatectomy Simulation

“…Some small distortion of the final prostate shape is likely to occur since the urethra has a natural slight bent at the middle and the ultrasound probe straightens it during image acquisition [6]. For a training simulator a slight distortion of the prostate model does not affect the usefulness of the system, as long as the final model still looks like a realistic prostate to a specialist.…”

Correlation of transrectal and transabodominal ultrasound measurement of transition zone volume with post-operative enucleated adenoma volume in benign prostatic hypertrophy

“…However, accurate estimation of prostatic volume is an essential step in managing patients with BPH because it bears direct relevance to treatment options offered in each case [2–4]. In clinical practice, pre-operative estimation of prostatic volume is done because prostatic volume bears direct relevance to treatment options available to a particular patient [5, 6]. …”